Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b0cc3de2b89f81979a0477852d0a78dafc155a39429326e66f15f850170c15a' 
  AND token = 'TD4kX/0zi4SOK2T/TCrmPVduuE2cAszKNYSppUj7uj4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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