Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87023ee64ed3375b1abe8b09a5e89020a1bc78254222ae117f556c5d6becd095' 
  AND token = 'SXlmLZd2e8XOTwaH2+Lf4a/ROeXvrkwNzzQHFJsC4FM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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