Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d81e7f706038482fe4cab43d06d1c2b030846c001d0f9a015eb707d9d1c6265' 
  AND token = 'GEXE9E2M27e+bpZxTaKC097b5Hxc87uKopsTtaTli+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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