Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8924a27e61ebe51ed3903b283d046a175fbc551c77c5b305c2f99c91cd19b1e9' 
  AND token = 'N1/HKLJD91JYl+1Z6HT4njgiv039UR73kMaO25lQ80I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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