Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33fd4e5dad56d3ff7a436e5f50ffa814673061451c8fdfc80cf3c675cbe5699c' 
  AND token = 'wWR9uJNnmW/NblX/QRClh08cWI0Vdrbvmero3fkDsyE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}