Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '843ce8f594f80027d97790d8ed64e89ecc2e114701b5181d96ce8d0c646ac5f0' 
  AND token = 'j1xGM42faoNamD5kodBJrOiKHzfrxX1nX0ChoYFAYjc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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