Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e10c926fa19d7ba2c892cb22600a690b97dc4405ad8cbc12ae0dbd0b713295f' 
  AND token = 'MjHMdXcL0exdKYlE7aPfL/OX00/Cx9GJLJXwoz64IIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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