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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'fc632e765b1e51d22d766e75dc81c0887b4fca22e265ae9836f2029980748d26' 
  AND token = 'tfzfg4K/d2Wb8QAo0mkw32GGHXf99eheULh9W+Sl300=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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