Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43452f04cd862f4cd4431b38c3262f8f7d980c621064047760582058575bce6b' 
  AND token = 'v8IgijZYlQ0Z84kxI+q8NYzRtCCx15PLzb23XM7sLa4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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