Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '733d14d1026a6fff0ce5acb038736d91a75d02e0322b472eaa59e496c045a82a' 
  AND token = 'be6UFaTLCG9tn0zxE7j30Qc1pHDPzhu9DPHVHnD/PM8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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