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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '5778e95108d04779c5f198154fa8177275a25e2dee1367dc2067f04e693d94ca' 
  AND token = '06+H1XsKO/kFL+DaK0SVqds2Oh3Fep+0ZmrvkMqsra4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}