Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11f30c7a5614c3ff8995f2e8c3e679413c46c7a8784e3305f61411d3c4a02af5' 
  AND token = 'giV27HlyB8a0crbM4BsD5o4FXRjxiyOpLxxVxV/wY4c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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