Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e482b618b023123d58e02f68234740e1b95422b5e77d7e2cf9e0a932e0c6dc6a' 
  AND token = 'pVPyvPGvG72WCLmICIwz/qQJ4q56kdYDCoCo7E1XmRY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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