Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ad35445196570d68086b753283387bb8b00c4dfbac74dd82cb6e8799dc1b6c8' 
  AND token = 'twxYdlpJVJJP9+He+0Bby2BKVmJxVWdH09Idxr08qj8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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