Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd6ce1058b4aa05319d799719879d37dcf94daff1721068d352ea685219e74ea8' 
  AND token = '14/aew7sS8wBpd9xnyyeRO7ux2jnt0K5ueEaQRXMMyE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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