Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ae0ff4fc1bc8d55d3fc2089350b7a4148f0dba3c6bf5b80a59e25e9b7c332c7' 
  AND token = 'yXOaM/0LAeynH7mKYs/g1BH62iP8zWhctnIePr3UGmA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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