Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70680bc1fda406a2b5dff82c2c63faa02bd3179328b49f7b273ed7e5ffbcadd3' 
  AND token = 'wYl/MAf7FbtisMRZHrw5Fmp7nygLPawM9XleNsZPVPU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}