Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f879070861440f47b02961c5cc723ae34172a163799e931db7f5275216a7acc8' 
  AND token = 'EAdubXEoxR8gKM0F+1tyb1uOSCqeLRY16huRl9jcDh8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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