Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42082ac42ee5d41d8915d4f16bb1f71d58694aa2805106f4e3fdd5e7bfe9117e' 
  AND token = 'MTlXGx0MyhBkJLPRLCx3pz7aPctWfcxjtpyHMd32Lfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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