Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '65ffd99b6423e80de2c3dbd691811b1bd6c033026a0072427ffd2dabf1707223' 
  AND token = 'JkyyybwsAZWatsaSimJNp+juy4wGPyVmyN8kr4BvkCI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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