Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1877b3c0c878a9dd88ae0a0a6dca78da1b12f7f1d795962a9a53e95fcec48945' 
  AND token = 'ryVlWCuODNWYkIpcEFgChJIT/UpmhMw/tmOzr0ZoIHs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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