Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a13936ab60a2ee3b3a1bb98f2f21e86be5abbf70ef7a04c69a6ef04e1cd3aa14' 
  AND token = '0sLj5Em3pCZ4gKEmD5EYNntCg7/8ag328BJHFDOIu+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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