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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aac6b91d196190053c13a4acc12a8c821fe966a4505a9301441d6d3e14ae561e' 
  AND token = 'WRGu/THM06zq1rM871LL5EGb9YRvwKSaFSPdsNKNKDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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