Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5134db6c6bac2ffe8959ba5e6fdeb9f858f9779c3bda66d2835230b2eb73173a' 
  AND token = 'ZtsqY1LeOi60rpU89O20K8VsFOUMKbCaZUsCUISBqmo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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