Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4469e2304b2ddccbac4de9c4771531f2541e71fa478d589a7580e5c244989b0d' 
  AND token = '/haElEGQTaVanXV21b16Efyhtoe1OCFzV9WcRWVExMM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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