Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '559f80f5a8bd15b0c3bda9ba36b86efa964ab52738280186d3b943fea54390d0' 
  AND token = 'J+rI1f9J+1TovcwNOc5eh5pfPEkJcoT+9ygN8JRQ1ik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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