Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '808e8277081683271c0192397842ac48dc0d57dfa49707a1bd598dbbd160d76a' 
  AND token = 'izoEMDlF8JCAuFTdRKVjHn7Gn4ipoIIk8mD2q6bcpgM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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