Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b19ab66b0a2d99200f12774e5c0e5d25292c339d21e5f4005f486950632cc856' 
  AND token = 'KFKG70LCDXG17z/V9/la0TqYz6AKn2/vY7fadbHe3IE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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