Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80557c5e2a00d9771632fb5fa31bb2817046d0293cd2f65e9292ef8f73d1f8ef' 
  AND token = 'w6Ulc5bX6Dn2hsSw1qk67AaO9giM/6MqI9+DKbjU0aE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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