Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86086a2bb1c3b7d19439b0de0a6bd03158d9e6f5aad36f0b32cb4ba341e92d11' 
  AND token = 'tkjesMWax3T6V8gWm2V6vwC0c1u+RrM0VE7FynfyokE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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