Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38a532ff60d8659757eda4aabb3ede40035ecfe1631632c61eecbd2f91a0d265' 
  AND token = 'ejrpw8FoBM9AATVE+N81jBgqtuLxFmfZasoa4+wRDu8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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