Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7407020f165f6f75c95efecba2e9257eff6eb2b1eeec677193e0f77bafd17e40' 
  AND token = 'TP64IRxohgOR+CzBMu6cDAX4dOCtD/jMJZZuIN2nIFI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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