Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbb94ed4913471c0169616b709c93d9085fc131f18917e4e0a1d229fef723cb1' 
  AND token = 'CSr3pNXCteROJZVczQ95nCSr1Gp9jKqJzztTJJUS550=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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