Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5107afbcab73bd65d8c87e1e22e5d177a1f96d2d3332147674db0dd4a406e6a' 
  AND token = 'WNs5lxDn22MOtJ3rYwPhmnpvwDDMWB7I/Y31vE8GvLQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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