Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3ec0fb77eae538ddbea50c3205cba3463d1fa06867db2699d82e69ba823218c' 
  AND token = 'Xx03/W4G2aljMjshv2jXALs4I+E3qm5+IKDRCjvlK7w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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