Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b02e2b26dd26ee2086036ce9cfd5fb42ef0f56850b31318d19a625e476e748bd' 
  AND token = '569btGe/3b1qn0TZL66zlkc1y/4Q4zN3KMy02hk9kMo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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