Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '774e05b5544de71742a0e3f5e12bff6bc9c7362071194f4797beb21d4857433e' 
  AND token = 'Uzbnotx9NoXI95LDpNjlfVEHiE44XlttYL0GlwcfTU4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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