Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77807ecba58cee2a50da840206f09c93a95b6eb2b64ed6839188037a73c7b142' 
  AND token = '2aIgl2+15HEEnlonQ4vWoZIcRfnh8+yBVa9e+Qb0u/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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