Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77f05128b002da9dfddcb22b13d0f9c7edd76fed88bdd05111ddbca7c2aa1a00' 
  AND token = 'q6nM/ST1ov6EjpEyVzZUTs1l4ZKEw61H4GxU463gWzs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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