Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e9ed6fe5cde0b3f619f6d89e59c958153f75c0492b684d68530de0e4a2909008' 
  AND token = 'ZWjECRfcukiAXTL664V3p+GnL0PNbVHW+UgxPPO8kgw=' 
  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"
    }
  }
}