Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf079c491610a263ade26f51c700d9057c440ca3cc42ced98aff9db2ae4c9cd4' 
  AND token = 'dN6jAfBjbUuE9VxFm0v+N+HeHyQnp8h+A3KbdTab/0I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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