Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54b8b595f70f8834e2c929ce02e42393774b0d07ae6ddd1d511905cc7105ba15' 
  AND token = '4O2tV47hkoylPL6VyYdANJ3lPg8t9mX3nU/Bmj+NqD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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