Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '157cd9943f117d1b7d22d1b3bb1cd4787e514f613cf42be414a2be42e9e6439b' 
  AND token = 'H+CMhNXfimHuYnz//j/f8clS1HR1t467LFiSoYcij54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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