Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0560129974ca3e912a705b17b263ce395f1dafa8d6244c3f8b5027f68ab857b6' 
  AND token = 'Zlcn1zecNFnqgOSHYB52Z0vNyE5li2VbTg8nYIHi4eQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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