Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba7c25da08eddf8f95abe75cc439d4a13426fc2d41e3b29be1c51ec83b99e766' 
  AND token = 'NrQ+bg8ZA7vXolPA5VMt0s3m40NAlWEUKgLCMhOWKYs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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