Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '99d87c5914fcc92de5f3d58df3f2d8cdec8494071f50f2d9c2472d0080ab3de9' 
  AND token = 'zZRMxwq5XXEeC9T78xW/u69eeM86F+Ojpzrw4YnD1R8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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