Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05083bc9d9387777970334b717809c79c1084d2500c453f42bef54e9a0137688' 
  AND token = 'YeR8uqqagl8GAXgNk1Sqk0/2JTy3sGWSZ48moytoRBA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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