Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '503703b2598b04a2da894ed3f481f8975e085564c4e84624aeee7d316956a555' 
  AND token = 'qeS7uYW6XXVXJa3EWyl3R8ANC2KH6w0bgOc32xdgVXQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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