Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '086738d911fd7fac49bbf6f0760da8baf1347437e5c5e3d27ee33d5333370296' 
  AND token = 'WBc0Eny4o2QCfpBLfB1z4rlqRaYvvuYR4iFPYMYAb4E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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