Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c24c2842ed7ac5c7ac2d0ef97f7c9f96260d1f7f77ac6fa02caed7657956bd8' 
  AND token = 'GIWL+6I4qPHvIKUc0t4zWpaOZFgRbRbmqMtcn0FR71Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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