Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '31f63bb3acac194620d3d975d4299fa5474a83ac1dc97dd296b1cb7b4eb2db70' 
  AND token = 'X2z4FGzUwH01J8DyStCB65D9xI4d0hP4vC7jhDWrmpM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}