Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2513f527bb07f67540bc4ddf4a11a440abf7f45d46f9e7b81e70367e378403d8' 
  AND token = 'PM3DgNyrudBjYtSqYWfNJyCO7jE+5+yuVNi/aIdvNDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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