Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abe50c67903e73ce771690707a0624fe6bb71c36c45acc9afbd43638f5c60407' 
  AND token = 'I8HPFXoF30dP5DVXIxecWVRVNx2lj+KEuj1CR1AFbBY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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