Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37eae3dd78b279edc8abaf465805a4fb983811d796180f08a7c5146cb4234969' 
  AND token = 'MZjit3IOjGBDMDd19LTo3eKebizSx1uGiCjkP7XyPqo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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