Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6fe54714fe4e32be781ec9e36d457077fe007813f61c3f27bb82ae019e8bad24' 
  AND token = 'IUpy5BKENNVDM0oXu6aaCqdmq5JoqIYLAh8ZodYUWd4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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