Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e8f1a3a5e3c28048182be544f2867df08c4adf7efd10ff5988b3c6c11f45dee' 
  AND token = '9PbSW+mEWWAXRoRwauVa/Sc2SWckCQck11WRhxY90FM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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