Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2658a962f24611681cf408d09831e9134f7c793ed02674f2867b9957440a3cf' 
  AND token = 'o0msuDHLCWVqAnu/k+HqNMa63xanhQ90e/XExQDK2wM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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