Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11af27113f2d18c0b5def019d1389f73fb2eb823c3489c4629d90fc347bcdb56' 
  AND token = 'P6iKA8Zb0+/mNWNnv67ORA5qJrQb+Occhp3DRorFASE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}