Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '120c721294eb518e39244d809e825892820afda9622d7862023e100640282b95' 
  AND token = 'wbjUeUFfs0ilxUPkFTuSihlQrsOsZ0eha3vCMSvWSIo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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