Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65d15d8ee9c09b3f2c6f826549aa5624ef117e2502167c4ac7cf1d264b5edf12' 
  AND token = 'okfiJoctVqfPXQRxXq5QfyBR4q3quzqsmbK8SGAvkBU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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