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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '95d1c70825127b382d3a865227a3dea664287fe511ebd99c1c1771da32abbb15' 
  AND token = 'BP/vmFnJj5nr1sM4XhFgS6+SSTJ5dYt7sJtbi6/oJxo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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