Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6bc225c2c4c683091bc41b8d0b0265ae06df7c8696d0dcf828501660b5c9cc5a' 
  AND token = 'sGluNpVUeeDrkc9yLlKHbbK6Xc3BIxhKsHNm5TeO8cw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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