Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edbcdab5433b4b140ed247a8bf098d74d15f4d609d628af5eb91473df0fe8687' 
  AND token = 'QvWfVWeCFuDvOW2dnvpTQFuH1Fa7jcMoDRuil5HKIY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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