Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'ae12740fa3cef713abe5de928b3fb09b85974fa861d4f9063200444c58708f7a' 
  AND token = 'yQyMxCcn9E2UY4150tfVZx9LHf+f25lEHpnLBXybdG0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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