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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d9cfef9d69de1aadef99f5f065e8042db48d36d1de8fd5150f21d4ab239ef05' 
  AND token = 'VwE7z1M4Y/obNVg5xlLeC/cY7lztG6i+xmZoGupMr2E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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