Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57f170de5924908bdec4ef44f6f17848a970d70a2d629671349df2b2cbe9e46f' 
  AND token = '3Os8tNoCgaCJdzapp/YLQVQelLAsKW1i9YsD0Qh/7xY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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