Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc512b362e6f85a9172887f82fbc194d51443b259457baf93f2a19bc49657b59' 
  AND token = 'uZJUdOO1x456zSxOqDRf6pFp1Z2M/Pm0Q7KJ/bfFV64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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