Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74547a74b8efe8465c9f16e0c22931c69d7400c394d49cf485af37f1133f5c19' 
  AND token = 'wE9GlQgwrs2fKNKXb44gk2DD9elXTfwgeqJaubPi69s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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