Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36c82902efc823f5c0d2e189c181ccac270094e354bbaa2c29763a851e7d0eee' 
  AND token = '9hEbgrPfcEX6UmQV86ha0qJcBQrS3eFoV/xmbEJm258=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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