Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '513e44d6225aa5d4b3ca1858c5cb52d2e542540086737164ac40b5f8054f732b' 
  AND token = 'VImHsyLdOmDmMkr29Ciu8xdCtwNjSPcoi0++RUdqzCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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