Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a1a74c73f686f12f9fda9dffce0525700f5430c922218c021d008cdfef7757a' 
  AND token = 'uZ9jbnzL/RFSgtafOQmKFGnaVrTXcT0MigpYmDkqork=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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