Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd7881cd44bc985673706732e8b4de05aff9be3526f3b531ec463437b863631e' 
  AND token = 'K363DSUfCmUI8aJ/vuridgsVjV078LMmQTZF6HH+ErA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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