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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'dd1800fc2abafc68d84e286c712687005c3c7178880a05fec921e570ec0bb6eb' 
  AND token = 'ZLe5jWIL8/nZFoqQ1Ehlp2qu+6O1SMMF7xmlubaL7rs=' 
  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"
    }
  }
}